What is a twin screw extruder?

It is an extrusion machine with two intermeshing screws inside a twin-bore barrel. The screws feed, melt, mix and pump plastic through a die. Compared with a single screw machine it conveys positively, mixes far better and handles powders and difficult feedstock more reliably.

What is the difference between a conical and parallel twin screw extruder?

Conical machines have tapered screws — large at the feed end, small at the die — giving strong feeding and high compression in a short length, ideal for PVC pipe, profile and board. Parallel machines keep a constant diameter and use segmented screws, making them better for compounding, granulation and high-filler mixing.

Twin screw or single screw extruder — which do I need?

Choose a single screw extruder for simple, high-output pumping of uniform material such as film blowing or pipe from pellets. Choose a twin screw extruder when you need mixing, venting, powder feeding or the ability to run filled and recycled material.

What is the difference between co-rotating and counter-rotating?

Co-rotating screws turn the same direction and give high-shear mixing at high speed, standard for compounding and masterbatch. Counter-rotating screws turn oppositely with gentler, pump-like conveying, better for heat-sensitive PVC and very high filler loads.

What output can a twin screw extruder produce?

It depends on size. In our conical range a 45/90 machine runs about 100–180 kg/h, a 65/132 around 250–380 kg/h, and a 92/188 machine 600–900 kg/h. Formulation, screw design and downstream capacity also affect real output.

What materials can a twin screw extruder process?

Rigid and soft PVC, WPC, PE and PP compounds, PS for foaming, masterbatch and additive compounds, and filled or recycled feedstock. Twin screw machines are especially good with low-bulk-density powders and highly filled recipes.

What is the twin screw extruder barrel made of?

Typically 38CrMoAlA nitrided steel, W6Mo5Cr4V2 or HIP powder steel. For abrasive compounds a bimetallic surface is used — a tungsten-added alloy layer of 2.5–3 mm reaching about 62 HRC inside the bore for longer wear life.

How do I choose the right twin screw extruder size?

Start from your product and target output, then pick a machine class with headroom. Confirm feeding (forced feeder for powder), venting needs, and how abrasive the recipe is so the screw and barrel surface is specified correctly.

Twin Ntsia Hlau Extruder: Hom, Nws Ua Haujlwm Li Cas & Yuav Xaiv Li Cas

2026-08-13 0 Tso lus rau kuv

Los ntawmNanhaiya Technical Team— Extrusion Machinery, Zhoushan · Tshuaj xyuas rau lub Hoobkas raug · ~ 10 min nyeem

Teb ceev

Ib tug ntxaib ntsia hlau extruder siv ob lub intermeshing screws nyob rau hauv ib tug ntxaib-bore chim rau pub, yaj, sib tov thiab twj tso kua mis yas los ntawm ib tug tuag. Ob tsev neeg tseem ceeb yog conical (tapered screws, zoo tshaj plaws rau ncaj qha PVC yeeb nkab, profile thiab board extrusion) thiab parallel (constant-inch, segmented screws, zoo tshaj plaws rau compounding, granulation thiab high-filler mixing).

Lub ntxaib ntsia hlau extruder yog lub tshuab ntau yam hauv kev ua cov yas. Ob lub hau ntswj tsis yog ib qho txhais tau tias kev xa khoom zoo dua, kev sib xyaw zoo dua thiab kev tswj xyuas nruj dua li qhov tshwm sim ntawm cov khoom nyob hauv lub thoob - uas yog vim li cas cov tshuab ntxaib ntsia hlau ua rau PVC extrusion, compounding thiab pelletizing. Tab sis "twin ntsia hlau extruder" npog ntau lub tshuab sib txawv. Phau ntawv qhia no piav qhia seb lawv ua haujlwm li cas, cov conical-piv-vim-pib thiab co-piv txwv-counter-rotating splits uas txiav txim siab qhov twg koj xav tau, tus qauv tiag tiag qhov ntau thiab tsawg, thiab yuav ua li cas qhia lub tshuab zoo.

Twin screw extruder manufactured by Nanhaiya — Ib tug Nanhaiya ntxaib ntsia hlau extruder - ob intermeshing screws nyob rau hauv ib tug sib tw ntxaib-bore chim.

Yuav ua li cas ib tug ntxaib ntsia hlau extruder ua haujlwm

Cov khoom nkag mus rau qhov qhib qhib, yog xa mus rau pem hauv ntej los ntawm ob lub meshing screws, compressed thiab melted los ntawm kev sib xyaw ua ke ntawm cov cua sov thiab cov tshuab shear, homogenised, ces pumped los ntawm kev tuag ntawm lub siab ruaj khov. Vim hais tias cov screws intermesh, cov khoom yog zoo pauv los ntawm ib tug ntsia hlau mus rau lwm yam es tsis yog tsuas yog dragged nyob rau hauv ib phab ntsa - uas muab ntxaib ntsia hlau tshuab lawv cov yam ntxwv tsis tu ncua tso zis thiab muaj zog sib tov.

Lub thoob tau muab faib ua cua sov thiab cua txias kom txhua theem zaum ntawm qhov kub thiab txias, thiab ntau lub tshuab suav nrog lub tshuab nqus tsev kom rub cov dej noo thiab cov volatiles tawm ntawm cov yaj ua ntej tuag. Core sequence:

Pub- lub ntiajteb txawj nqus los yog quab yuam (crammer) feeder thawb cov khoom rau hauv qhov chaw pub khoom noj; yuam kev pub mis yog qhov tseem ceeb rau cov hmoov uas tsis tshua muaj siab zoo li PVC qhuav-kib sib tov.
Melting & compression- Thaum tshav kub kub los ntawm lub thoob thiab shear los ntawm cov screws melts thiab compacts cov khoom, tsav tawm cua.
Mixing & venting- sib tov khoom disperse fillers thiab additives; cov vents tshem tawm noo noo thiab volatiles.
Metering & tso tawm- lub siab ruaj khov tsim thiab ib qho zoo li yaj yog thawb los ntawm qhov tuag.

Twin ntsia hlau vs ib leeg ntsia hlau extruder

A ib leeg ntsia hlau extruderNws yog qhov yooj yim dua thiab pheej yig dua, thiab nws zoo heev ntawm qhov nws ua: siv cov khoom siv uas twb muaj lawm ntawm cov khoom siv siab. Lub tshuab ntxaib ntsia hlau yog qhov kev xaiv thaum txoj haujlwm xav tau kev sib xyaw, tso cua lossis tuav cov khoom noj nyuaj.

Qhov xwm txheej	Ib leeg ntsia hlau extruder	Twin ntsia hlau extruder
Kev xa tawm	Drag flow - nyob ntawm kev sib txhuam	Zoo, intermeshing hloov
Sib tov	Txwv (ntxiv cov seem sib xyaw)	Muaj zog dispersive & distributive mixing
Hmoov noj	Kev tawm tsam nrog tsawg qhov ntom ntom	Kov hmoov zoo, tshwj xeeb tshaj yog nrog yuam feeder
Qhov cua	Muaj peev xwm tab sis txwv	Muaj txiaj ntsig ntau theem venting
Zoo tshaj rau	Zaj duab xis tshuab, yeeb nkab los ntawm pellets, yooj yim profiles	PVC, compounding, pelletizing, ntim khoom / siv dua tshiab
Nqi	qyog	Siab dua

Conical twin screw and barrel for PVC extrusion — Conical: tapered screws rau ncaj qha PVC yeeb nkab, profile thiab board extrusion.

Conical vs parallel ntxaib ntsia hlau extruder

Qhov no yog thawj qhov kev txiav txim siab tiag tiag. Ob leeg yog ntxaib ntsia hlau, ob qho tib si intermesh - qhov txawv yog cov ntsia hlau geometry, thiab nws txiav txim siab seb lub tshuab zoo ntawm.

Qhov xwm txheej	Conical ntxaib ntsia hlau extruder	Parallel ntxaib ntsia hlau extruder
Ntsia hlau zoo	Tapered - loj pub kawg, me me tuag kawg	Txoj kab uas hla tsis tu ncua, ua los ntawm ntu
Lub zog	Muaj zog noj & siab compression nyob rau hauv luv luv	Flexible, reconfigurable mixing
Zoo tshaj rau	PVC yeeb nkab, profile, board, ntawv, WPC	Compounding, granulation, masterbatch, siab muab tub lim
Ntsia hlau hloov	Tsau geometry ib qhov loj me	Rov tsim kho qhov profile rau daim ntawv qhia tshiab
Hom layout	Direct extrusion rau tuag	Feem ntau xaus rau hauv kab pelletizing

Txoj cai luv luv: yog tias extrudateyogkoj cov khoom (ib lub yeeb nkab, lub rooj tsavxwm, profile), saib aconical ntxaib ntsia hlau extruder. Yog tias koj tab tom ua pellets lossis dispersing ib pob xav tau ntxiv, saib ntawm qhov sib npaug - saib pebthaum uas tig mus twin ntsia hlau chimqhia.

Co-rotating vs counter-rotating

Nyob rau hauv tib lub tsev neeg muaj kev sib cais thib ob, thiab nws tseem ceeb npaum li conical-piv rau-parallel. Co-rotating screws tig tib txoj kev thiab muab high-shear, high-speed mixing - tus qauv rau compounding thiab masterbatch. Counter-rotating screws tig rov qab cov lus qhia nrog maj mam, twj zoo li conveying, uas suits PVC rhiab heev thiab siab heev loads.

General kev lag luam ceeb toom:conical twin ntsia hlau tshuab rau nruj PVC yog feem ntau counter-rotating thiab tag nrho intermeshing, muab zoo-tsav conveying ntawm tsawg shear. Feem ntau cov kab sib txuas, los ntawm qhov sib txawv, khiav co-rotating parallel cov cav tov ntawm ntau dua cov ntsia hlau ceev.

Twin ntsia hlau extruder qauv & tso zyog

Tshuab loj yog hais los ntawm lub taub hau taub hau - pub / tuag diameters rau conical, ib txoj kab uas hla rau parallel. Ntawm no yog daim ntawv qhia loj-rau-tso tawm rau peb cov conical ntau yam, uas npog feem ntau PVC yeeb nkab thiab profile ua haujlwm:

Qauv	Ntsia hlau txoj kab uas hla	Lub cev muaj zog	Cov zis (kg / h)	Daim ntawv thov tsom
SJSZ-45/90	Φ45/90 hli	15-18.5 kW	100–180 : kuv	Profile me me
SJSZ-51/105	Φ51/105 hli	18.5-22 kWm	150–250 : kuv	Profile, mos PVC
SJSZ-65/132	Φ65/132 hli	37-45 kWm	250–380 : kuv	PVC yeeb nkab / profile
SJSZ-80/156	Φ80/156 hli	55-75 kW	350-500 Nws	Cov kav dej nruab nrab
SJSZ-92/188	Φ92/188 hli	110-160 kWm	600-900 Nws	Cov yeeb nkab loj / extrusion

Cov zis kuj yog nyob ntawm kev tsim, ntsia hlau tsim thiab lub peev xwm downstream, yog li kho cov no raws li cov qhab nia ntau dua li lav. Rau cov cav tov sib npaug, cov zis tau teeb tsa los ntawm txoj kab uas hla thiab cov ntsia hlau ceev, thiab cov kev teeb tsa tau tsim rau hauv daim ntawv qhia.

Dab tsi ntxaib ntsia hlau extruders siv rau

PVC yeeb nkab, profile & board- daim ntawv thov classic conical.
WPC (wood-yas composite)- decking, phab ntsa panels thiab profiles.
Compounding & masterbatch- dispersing pigments, additives thiab fillers.
Granulation & pelletizing— saib pebthaum uas tig mus ntxaib ntsia hlau pelletizing kab.
PS ua npuas ncauj- ua npuas ncauj thiab board ntau lawm.
Rov ua dua- reprocessing ntim los yog paug cov khoom noj rau hauv cov pellets siv tau.

Yuav ua li cas xaiv ib tug ntxaib ntsia hlau extruder

Txhais cov khoom.Direct extrusion ( yeeb nkab, profile, board) taw qhia rau conical; pellets los yog compounds taw tes rau parallel.
Teeb tsa cov zis.Sib tw lub hom phiaj kg/h mus rau chav kawm tshuab nrog lub taub hau - khiav tawm ntawm lub neej luv luv.
Tshawb xyuas cov khoom noj.Hmoov xav tau kev pub mis; moist los yog volatile khoom xav tau lub tshuab nqus tsev vacuum.
Ntsuas kev puas tsuaj.High CaCO₃, ntoo fiber ntau lossis iav fiber ntau txhais tau tias koj yuav tsum hloov kho cov ntsia hlau thiab lub thoob.
Paub meej tias haum.Yog tias koj tab tom hloov qhov chaw ntau dua li lub tshuab, xa cov extruder hom / qauv lossis kos duab.

Nanhaiya tsim thiab tsim ob qho tib si hauv tsev, yog li lub tshuab tuaj yeem sib phim rau koj cov khoom - saib peb covyas extruder tshuabntau thiabntxaib ntsia hlau extruderqauv.

Twin screw extruder built by Nanhaiya — Cov cav tov thiab hnav cov khoom yog tsim nyob rau hauv tib lub Hoobkas Zhoushan.

Screw thiab chim: dab tsi tiag hnav

Txawm tshuab koj yuav, lubntsia hlau thiab chimyog ib feem uas hnav tawm thiab qhov feem ntau cuam tshuam rau yaj zoo, tso zis thiab khiav nqi. Nws tseem yog qhov koj yuav hloov pauv thaum lub sijhawm lub tshuab lub neej - uas ua rau nws cov hlau thiab kev kho saum npoo tsim nyog tau txais txoj cai pem hauv ntej.

Nanhaiya tshuab screws thiab chim los ntawm 38CrMoAlA nitrided steel, W6Mo5Cr4V2 los yog HIP hmoov hlau, thiab tshuaj tsuag ib tug tungsten-ntxiv hard alloy nyob ib ncig ntawm lub yooj yim-hnav seem mus cuag.62 HRCsab hauv lub bore - piv rau ib qho 58 HRC - nrog 2.5-3 mm alloy txheej. Rau kev xaiv ntawm qhov chaw, saib peb qhov kev sib piv ntawm abimetallic vs nitrided ntsia hlau chim; rau conical tivthaiv nws tus kheej, pebconical twin ntsia hlau chim phau ntawv qhia. Hnav cov khoom muaj nyob ntawm pebkhoom seemntau.

Cov lus nug uas nquag nug

Dab tsi yog qhov ntxaib ntsia hlau extruder?

Nws yog ib lub tshuab extrusion nrog ob qhov sib txuas sib txuas hauv ib lub thoob ntxaib. Cov screws pub, yaj, sib tov thiab twj yas los ntawm ib tug tuag. Piv nrog rau ib lub tshuab ntsia hlau nws conveys zoo, sib tov zoo dua thiab tuav cov hmoov nplej thiab cov khoom noj nyuaj ntau dua.

Dab tsi yog qhov txawv ntawm conical thiab parallel ntxaib ntsia hlau extruder?

Conical cov cav tov muaj tapered screws - loj ntawm qhov kawg pub, me me ntawm qhov tuag - muab lub zog noj thiab compression siab nyob rau hauv ib tug luv luv ntev, zoo tagnrho rau PVC yeeb nkab, profile thiab board. Cov cav tov sib xyaw ua kom lub cheeb tsis tu ncua thiab siv cov ntsia hlau segmented, ua rau lawv zoo dua rau kev sib xyaw, granulation thiab high-filler mixing.

Twin ntsia hlau los yog ib qho ntsia hlau extruder - uas kuv xav tau?

Xaiv ib tus ntsia hlau extruder rau qhov yooj yim, siab tso zis tso tawm ntawm cov khoom siv xws li zaj duab xis tshuab lossis yeeb nkab los ntawm pellets. Xaiv ib tug ntxaib ntsia hlau extruder thaum koj xav tau kev sib tov, venting, hmoov noj los yog muaj peev xwm khiav cov khoom ntim thiab rov ua dua.

Dab tsi yog qhov txawv ntawm co-rotating thiab counter-rotating?

Co-rotating screws tig tib txoj kev thiab muab high-shear sib tov ntawm kev kub ceev, tus qauv rau compounding thiab masterbatch. Counter-rotating screws tig oppositely nrog softer, twj zoo li conveying, zoo dua rau tshav kub-rhiab heev PVC thiab siab heev muab tub lim loads.

Cov zis dab tsi tuaj yeem ua tus ntsia hlau ntxaib extruder tsim?

Nws nyob ntawm qhov loj me. Hauv peb lub conical ntau lub tshuab 45/90 khiav txog 100-180 kg / h, 65/132 ncig 250-380 kg / h, thiab 92/188 tshuab 600-900 kg / h. Formulation, ntsia hlau tsim thiab downstream peev kuj muaj feem xyuam rau cov zis tiag tiag.

Cov ntaub ntawv dab tsi tuaj yeem ua cov txheej txheem ntxaib ntsia hlau extruder?

Rigid thiab mos PVC, WPC, PE thiab PP compounds, PS rau foaming, masterbatch thiab additives, thiab sau los yog siv cov khoom noj. Twin screw machines are especially good with low-bulk-density powders and highly filled recipes.

Qhov ntxaib ntsia hlau extruder chim yog dab tsi?

Feem ntau 38CrMoAlA nitrided steel, W6Mo5Cr4V2 lossis HIP hmoov hlau. Rau abrasive tebchaw yog siv ib tug bimetallic nto - ib tug tungsten-ntxiv alloy txheej ntawm 2.5-3 hli mus txog 62 HRC nyob rau hauv lub bore rau ntev hnav lub neej.

Kuv yuav xaiv txoj cai ntxaib ntsia hlau extruder loj li cas?

Pib los ntawm koj cov khoom thiab lub hom phiaj tso zis, ces xaiv lub tshuab chav kawm nrog headroom. Paub meej tias kev pub mis (yuav tsum feeder rau hmoov), qhov xav tau qhov cua, thiab daim ntawv qhia abrasive npaum li cas yog li cov ntsia hlau thiab lub thoob ntim tau teev kom raug.

Cov khoom lag luam cuam tshuam los ntawm peb lub Hoobkas

Twin Ntsia Hlau Extruder

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Ib Screw Pelletizing Kab

Mini Ib Ntsia Hlau Extruder

PVC Board Conical Twin Ntsia Hlau Barrel

Tau txais ib tug ntxaib ntsia hlau extruder loj rau koj cov khoom

Qhia rau peb koj cov khoom, cov khoom siv thiab lub hom phiaj tso zis thiab peb cov engineers yuav pom zoo kom conical los yog thaum uas tig mus, txoj cai qauv loj, thiab ib tug ntsia hlau thiab chim spec matched rau koj formulation. Hauv tsev ntsia hlau thiab chim machining txhais tau tias peb tswj qhov tseem ceeb tshaj plaws.

Tau txais cov lus hais hauv 12 teev →

Nanhaiya (Zhoushan) Yas Machinery · 500+ cov neeg siv khoom thoob ntiaj teb ·ntxaib ntsia hlau extruders, conical & thaum uas tig musntsia hlau chim &khoom seem